The on-site inspection took more than three hours, and Ding Fan just took a turn around the scene at random, after all, there was nothing to see.

Although the house is not small, there are few things in it, and it can even be said that it is an empty house, there is nothing to see at all, and it is not an exaggeration to say that it is a rough house.

In the whole room, almost the walls were not painted, and in the whole house, except for the door and windows, there were only a few shabby stools, and there was a thick layer of dust on the floor.

So there was nothing superfluous at the scene, but on the gray ground, Ding Fan found a few marks, and Ding Fan thought that they were pressed out on the ground when the forensic doctor put things.

But I asked Qin Lu, but Qin Lu said that the boxes in the doctor's hands were all flat-bottomed, and it was impossible to poke two pits in the ground.

Moreover, the location by the window has not been stopped by anyone before, and there are no clues in the window itself, so the investigation is more on the side of the deceased than at the location of the window.

Since it is not a trace left by the police, I think that this trace must have been left by the murderer at that time.

I just don't know what this trace is used for, the whole scene, there is a lot of dust, but there are no footprints on the ground, but not far from the window, leaving a few irregularly shaped marks, which looks very weird.

After returning to the police station, Director Lu of Jin'an's side personally prepared a room for Ding Fan as his office, and he was a little embarrassed to be polite to him.

Of course, Director Lu has also heard of Ding Fan's name for a long time, especially recently, basically everyone knows about him, who beat two murderers in public.

But in the eyes of these old police officers, this matter is right, whose child is not the treasure of his parents, he was beaten to death like this, Ding Fan shot angrily, and no one could say his fault.

So after Ding Fan made his move this time, there was everything outside to say, but in the eyes of these old police officers, this time he did it, and he really had a bad breath.

So when Ding Fan came this time, not only did Director Lu respect him very much, but also those police officers outside, after knowing who he was, they also had excited looks in their eyes.

It's just that Ding Fan looks a little weird with this look, and even a little dodgy, as if he doesn't want to see them like this now.

On the table were all materials related to the case sent by Meng Huan, and at this time she had already led someone to sort out the information on the forensic doctor's side.

"Director Lu, what do you think about this case?" The problem of outsiders, the analysis of the case, after all, still has a little impact, sometimes the local customs and people are not clear, it is easy to form misunderstandings, so sometimes, don't look at the local people may not be able to analyze the case, but some ideas for the case may really be useful.

It's just that Director Lu really didn't expect that Ding Fan would ask him about it, and he seemed to be a little excited for a while.

It's just that Director Lu himself is not a criminal investigator, and for these cases, it is somewhat difficult to talk about this kind of case: "To tell the truth, I'm not afraid of Director Ding's jokes, I'm really helpless about the case, it's not that I haven't been in contact with murder cases before, but this case is really a bit incredible, I've never seen this kind of situation!"

This is really a big truth, the previous cases are not nothing, but those cases back then were simple and small cases, even if it was a homicide, it was a very simple case, send someone down to visit and investigate for a few days, basically you can find out the person, after a simple investigation, the case can basically be closed.

But now it's okay, let's not talk about them, even when Meng Huan saw this case, he frowned deeply, was silent for a long time, and led people to investigate for a long time, but in the end, not only did he not find any clues, but within a month, three cases occurred in a row.

"To be honest, this case is really a bit evil!" Ding Fan opened the information in his hand one by one, as well as the forensic report behind, and did not forget to look at it, but most of the photos saved in it were still seen: "The cases I investigated before also had some bizarre and weird, but they were really weird to this extent, it is really rare, in my opinion, the three cases this time are very likely to be done by the same person!"

"Why do you say that?"

When Director Lu heard Ding Fan say this, his eyes immediately lit up, to be honest, Meng Huan had also said this idea before, but they didn't care much about this idea, after all, all this was just a conjecture, and there was nothing to prove it for the time being, and the three cases could be connected together.

"Look at this!" Ding Fan took out a few photos from the information, put them on the table one by one, pointed to the things on it and said: "The focus is on the knot tied on the rope, this is the knot I brought back from the scene today, three murder scenes, and the exact same knot appeared at the same time, is this a common denominator?"

The same knots are said to be commonalities, and they are indeed commonalities, but it doesn't seem strange to think about this kind of rope knotting!

So in the face of Ding Fan's question, I didn't know how to respond, and I hesitated for a while.

Ding Fan also saw what he meant, holding a rope that had been prepared before, and his hand was quickly entangled, and in a few clicks, he braided a knot out, put it in front of Director Lu and said, "This kind of knot, I don't know if Director Lu has seen it before?" This kind of knot is called Proshock knot, Jin'an generation is mountainous, there are many people who love to climb mountains, generally these people will use this kind of knot in climbing, it is really rare outside, and even few people will use it, as far as I know, people who will use this knot are veterans with mountaineering experience!"

After Ding Fan said this, Director Lu immediately understood.

Ding Fan made it clear that no one would use this kind of knot, and it was obviously impossible for the three murderers to use the same knot.

"Is it just because of this knot?" Director Lu is a very strict person, but it is just a matter of knots, and he can't fully determine this matter: "I understand what Director Ding means, but I can't just ...... Isn't that a bit sloppy?"

Ding Fan understood what he meant, but he was still a little embarrassed to say it at this time, the two were not very familiar with each other, and those who were familiar with him knew that as long as it was related to the case, it would not be a problem to discuss it with each other.

Even Ding Fan very much hoped that someone could discuss these things related to the case with him, but all along, few people discussed these things with him.

"I know what Director Lu means, but I just walked to the scene today, and I haven't finished reading so much information, can't there be anything else?" Ding Fan said as he spread out all the information in front of him, and took a rough look at the information, but this time the amount of information is really a bit much, and it is not a simple matter to analyze all the clues in a short time:" Wait, let's talk about the nature of the case now, I don't think Director Lu will casually agree with the possibility of a knot brought out, and look back at the social relations of these people. ”

The information in hand is already relatively complete, but there is a lack of some social relationships, these things need a lot of visits, not to find clues in a short time, it is estimated that Meng Huan has been investigating this matter during this time.

"Actually, I have an immature little idea!" Director Lu didn't expect that after listening to his words, Ding Fan seemed to agree with his own opinion, and he didn't mean to be self-righteous, so he said: "If I guess correctly, is it possible to have a vendetta? After all, the deceased has not lost much of his belongings, and there are still traces of being beaten on his body, in my opinion, it is very likely to be a vendetta or a love killing!"

Not to mention, this may really exist, but this may need some social relations of the deceased to rely on, otherwise it will be difficult to establish.

This possibility is not entirely non-existent until there is no social connection.

Judging from the wounds on the deceased's body alone, the murderer should have a certain hatred for the victim.

"The key at the moment lies in the identity of the deceased, which needs to be verified as soon as possible!" Ding Fan put down the information in his hand, rubbed his eyes and said: "We don't know anything about the deceased now, we need someone who knows him to help us understand the deceased, otherwise it will be difficult to carry out this case, the detailed autopsy report from the forensic doctor has not yet been sent, and we are really a bit arbitrary to draw conclusions now!"

Criminal investigation cases require a lot of guesswork, but judgments cannot be made arbitrarily.

Don't jump to conclusions until any accurate clues come out.

This sentence was told to him by the professor when he was in school, and Ding Fan never forgot it and still remembers it.

"If the victim this time is a vendetta, then last month's case is also a vendetta?" Ding Fan put the previous two cases in front of Director Lu, and there were photos on them: "These are photos of the three cases, do you see anything in common?" The three deceased, all male, of similar age, were beaten before death, and were cut with sharp weapons many times, look at the wound in this position, if I guess correctly, the knife wounds on the three people, it is very likely that after forensic identification, we can find that the knife wounds on the three deceased may be the same knife, and the murderer should be left-handed, the location of the wound and the depth of the wound can be judged by this. ”

After listening to Ding Fan's analysis, Director Lu was completely stunned.

Ding Fan had just come today, and he had only been to a murder scene, so he could see so many things from these files so quickly.

He had known these things before, but he hadn't thought of arranging them.

If he had been able to analyze these things before, I'm afraid there would have been some progress in this case.

"Actually, these things, I think Meng Huan has thought of them from the beginning!" Although Meng Huan was not handed over by Ding Fan himself, she also worked with him for a period of time, and she couldn't fail to see these things: "It's just that she didn't tell you about these things, but made some adjustments to the scope of the visit, and the role is still not small, let's talk about the rest later!"

"Okay, Ding's department just came here today, take a rest first!" Director Lu nodded and pondered for a while before finally speaking: "The report from the forensic doctor's side should not come out in a short time, it will take a little time, let's have a meeting to discuss this case at that time!"

It's not that Ding Fan doesn't want to go on, in fact, the key point is still the photo in Ding Fan's hand, you can't see anything in one photo, but after the photos of the scene of the three murders are combined, the whole case is painted with a very weird color!